/*

 * Licensed to the Apache Software Foundation (ASF) under one

 * or more contributor license agreements.  See the NOTICE file

 * distributed with this work for additional information

 * regarding copyright ownership.  The ASF licenses this file

 * to you under the Apache License, Version 2.0 (the

 * "License"); you may not use this file except in compliance

 * with the License.  You may obtain a copy of the License at

 *

 *     http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

package com.bff.gaia.unified.runners.gaia.translation.types;



import com.bff.gaia.unified.sdk.coders.Coder;

import com.bff.gaia.api.common.ExecutionConfig;

import com.bff.gaia.api.common.typeinfo.AtomicType;

import com.bff.gaia.api.common.typeinfo.TypeInformation;

import com.bff.gaia.api.common.typeutils.TypeComparator;

import com.bff.gaia.api.common.typeutils.TypeSerializer;



import static com.bff.gaia.unified.vendor.guava.com.google.common.base.Preconditions.checkNotNull;



/**

 * Gaia {@link com.bff.gaia.api.common.typeinfo.TypeInformation} for Dataflow {@link

 * Coder}s.

 */

public class CoderTypeInformation<T> extends TypeInformation<T> implements AtomicType<T> {



  private final Coder<T> coder;



  public CoderTypeInformation(Coder<T> coder) {

    checkNotNull(coder);

    this.coder = coder;

  }



  public Coder<T> getCoder() {

    return coder;

  }



  @Override

  public boolean isBasicType() {

    return false;

  }



  @Override

  public boolean isTupleType() {

    return false;

  }



  @Override

  public int getArity() {

    return 1;

  }



  @Override

  @SuppressWarnings("unchecked")

  public Class<T> getTypeClass() {

    // We don't have the Class, so we have to pass null here. What a shame...

    return (Class<T>) Object.class;

  }



  @Override

  public boolean isKeyType() {

    return true;

  }



  @Override

  @SuppressWarnings("unchecked")

  public TypeSerializer<T> createSerializer(ExecutionConfig config) {

    return new CoderTypeSerializer<>(coder);

  }



  @Override

  public int getTotalFields() {

    return 2;

  }



  @Override

  public boolean equals(Object o) {

    if (this == o) {

      return true;

    }

    if (o == null || getClass() != o.getClass()) {

      return false;

    }



    CoderTypeInformation that = (CoderTypeInformation) o;



    return coder.equals(that.coder);

  }



  @Override

  public int hashCode() {

    return coder.hashCode();

  }



  @Override

  public boolean canEqual(Object obj) {

    return obj instanceof CoderTypeInformation;

  }



  @Override

  public String toString() {

    return "CoderTypeInformation{coder=" + coder + '}';

  }



  @Override

  public TypeComparator<T> createComparator(

      boolean sortOrderAscending, ExecutionConfig executionConfig) {

    throw new UnsupportedOperationException("Non-encoded values cannot be compared directly.");

  }

}